/Engine/Plugins/Developer/Concert/ConcertMain/Source/Concert/Public/ConcertSession.h
static bool CommonBuildCustomEvent ( const [UScriptStruct](API\Runtime\CoreUObject\UObject\UScriptStruct) * EventType, const void * EventData, const [FGuid](API\Runtime\Core\Misc\FGuid) & SourceEndpointId, const [TArray](API\Runtime\Core\Containers\TArray)< [FGuid](API\Runtime\Core\Misc\FGuid) > & DestinationEndpointIds, [FConcertSession_CustomEvent](API\Plugins\Concert\FConcertSession_CustomEvent) & OutCustomEvent )